Solidity Smart Contracts: Build DApps In The Ethereum Blockchain

By Rangel Stoilov

For the past couple of years, there hasn't been a bigger breakthrough in the IT world than the one that the Blockchain technology has made. The extremely fast growth of the industry, market and the technology itself leads to an enormous shortage of programmers that truly understand the blockchain. Along with the blockchain, smart contracts have emerged and with them - Solidity.

The idea of this book is to give you the easiest and best practices in becoming a blockchain developer. We will be focusing on the smart contracts development with Solidity in the Ethereum ecosystem.

You will learn to create your first smart contracts in the Ethereum blockchain even if you are a complete beginner and you know nothing about programming or Solidity.

I will show you the online IDE Remix to create your first smart contracts and we will go through all the features that Solidity provides us as a programming language.

In this book you will learn the following:

• We'll learn the essentials of the Ethereum blockchain. How to make and protect our wallets as well as mastering Metamask as our main Ethereum wallet in the creation of our smart contracts.
• We will go through the basic and advanced concepts of the Solidity language. We learn in depth how you can build your own smart contracts and test them out instantly in Remix.
• I will teach you how to use Metamask as your Ethereum wallet and I will give you security advice that will keep your crypto assets secure.
• You will have assignments that will help you out understand the material better with actual practice and not only passive consumption. After you finish this course you will fall in love with Solidity, Ethereum ecosystem and the smart contracts creation.

• Language: English
• Publisher: Rangel Stoilov
• Release date: Feb 7, 2019
• ISBN: 9781386297239

Rangel Stoilov

Hello! My name is Rangel and I have been a web developer for 8 years now. First I have started with Dreamweaver back in the days and went through Wordpress as a simple way to create websites. After that, I wanted to go further in the web development so I started learning different programming languages such as C#, Java & Javascript. I have a major in Java with Spring Framework and now I am pursuing to deepen my knowledge in different Javascript frameworks. I also have a passion for Solidity and Smart Contracts as well as the Truffle Framework. I have also dived in the entrepreneurial spirit with Amazon publishing and trading on the forex market as well as creating automated systems for trading.

Book preview

Introduction

I want to thank you and congratulate you for getting this book, Solidity Smart Contracts: Build Dapps in the Ethereum Blockchain.

This book contains proven steps and strategies on how to become a master in solidity, smart contract creation and Ethereum blockchain development.

Hello and welcome to our course about smart contracts with Solidity.

In order to be able to start making your own smart contracts first, we need to take a step back and go through some of the most essential aspects of the Ethereum blockchain.

We will start with a little history about what exactly is the Ethereum blockchain and its part in this fast-growing global evolution in technology.

In order to understand the whole system and how to make our smart contract the best way possible with as fewer functionality costs, we need to go through the mechanics of the Ethereum blockchain.

I’ll show you how to make your first wallet, how to manage it and from there we’ll move on to a little cryptography, block analysis and gas prices.

Things might look a bit overwhelming at first but once you get the hang of it you’ll appreciate that knowledge when we get to the coding part.

Every developer that makes smart contracts needs to have access to the test net network on which we will deploy our contracts. In order to do that we have to make a test net account alongside our main net one and most importantly we have to get some test net ether to work with.

I will show you a couple of easy ways to get as much ether as you might need, in your let’s call it journey, into creating smart contracts with solidity.

We’ll take a look at some block transactions and graph explanations. Some free to use but extremely helpful websites to help you track the blockchain network and much, much more.

Thanks again for buying this book, I hope you enjoy it!

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What Is The Ethereum Blockchain?

In this first chapter, we’re going to talk about the Ethereum blockchain and what it actually is.

During the past couple of years there’s not many people that haven’t heard at least a little about Bitcoins, Ethereum or the blockchain technology.

All the buzz generated by the media has led the industry to a giant leap and the best is yet to come.

I’ll try to keep things as simple as possible and I won’t go into non-essential stuff that might get you confused.

Ethereum by definition is an open-source public service that uses blockchain technology to aid smart contracts and cryptocurrency trading securely without a third party.

Ethereum offers two types of accounts: externally owned - those are the public accounts to which we own our private keys. Second ones are the contract accounts. Those are